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20.3.1.1, and shown in Figure 20-
13. Entry of carrier speed and heading via
the DD requires the boxing of the WIND
acronym prior to using the DD SPD, HDG
and numeric pushtiles as shown in Figure
20-17.
3. Repeat steps 9 through 11 for concurrent SINS
carrier align (paragraph2 0.3.2.1).
In concurrent manual carrier align, the INS
ALIGN COMPLETE computer message
may take 15m inutes or longer to appear.T he
navigation quality at this time may not be
better than 3 nm per hour. Because of the
extensive alignment time, it may be necessary
to launch prior to the receipt of the INS
ALIGN COMPLETE computer message.
20-27 ORIGINAL
NAVAIR 01.Fl4AAD-1
MFD FORMAT
Figure 20-16. CV Aligmn~t Formats - Mamtal (Sheet 1 of 2)
20.3.3. Standalone Alignment
20.3.3.1 INS Standalone Alignment. When the
SAHRS is not available or has failed, the alignment
procedure for the INS is exactly the same as for concurrent
alignment described above in paragraph 20.3.1. A
SAHRS failure is indicated by the inability to box
SAL-IRS on the MFD OWN A/C and align formats as
well as its appearancein the failure history tile and in
the MFD OBC-NAV format as described in Chapter 27.
20.3.3.2 SAHRS Standalone Alignment. When
the INS has failed or is not available or if a SAHRS
alignment mode other than that of the INS is desired,
then a SAHRS standalone alignment can be selected
Born the MFD SABRS ALIGN format (Figure 20-18).
This format will appear by depressing the NAV pushbutton
on the OWN A/C MFD format. An INS failure
is indicated by the inability to box INS on the MFD align
or OWN A/C formats as well as its appearancein the
failure history file and in the MFD OBC-NAV format as
described in Chapter 27.
As shown in Figure 20-18, the possible SABRS
standalone alignment modes include normal ground
align @IORM), stored heading ground align (SHDG),
magnetic initiated ground align (MAG), and carrier
align (CV). These are described below.
20.3.3.2.1 SAHRS Standalone Normal Ground
Alignment. SABRS normal ground alignment is the
recommendedm ode for SAHRS standalonea lignment
and it will be automatically selected as the default mode
whent he LNSi s not available.T his can be ascertainebdy
selecting the SABRS ground align MFD format and ohserving
that the NORM legend is boxed. Verification of
own-aircraft latitude and longitude should be made by
observing the values displayed on the SAHRS ALIGN
MFD format, and,i f necessaryn,e w valuess houldb e entered
via the DEU or DD control panel as described in
Normal ConcurtentG round Alignment proceduresp, aragraph
20.3.1.1. The SAHRS ALIGN COMPLETE message
will usually appear in less than 3 minutes, with an
align quality of less than 10 mn per hour.
ORIGENAL 20-28
NAVAIR 01-FUAAD-1
TYPICAL DATA ENTRY DlSPLAYS.
* I
CV ALIGN PARAMETER
SELECTEDIDATA KEYED IN SCRATCH PAD.
*ONLY THE RESPECTME CHARACTER
LEGENDS (S, -, W, N, +, E, OR BLANK)
APPLICABLE TO THE PARAMETER
SELECTED WILL APPEAR ON THE
OPTION DISPLAY LEGEND
Figure 20-16. CV Alignment Formats -Manual (Sheet 2 of 2)
20-29 ORlGlNAL
NAVAIR 01-Fl4AAD-1
jMrT iATrWA WUNSKS
Figure 20-17. DD Align Data Entry
Figure 20-18. SAHRS StandaloneA lign MFD Format
ORIGINAL 20-30
20.3.3.2.2 SAHRS Standalone Stored Heading
Ground Alignment. The SAHRS stored heading
align mode is always available subsequentto a previous
alignment to a SAHRS ALIGN COMPLETE. However
unlike an INS stored alignment, the SHDG pushbutton
on the SAHRS ALIGN MFD format must be depressed
to select this mode (Figure 20-18). As for all stored
heading alignments, no data entries are required and the
aircraft must not bem oved subsequentto SAHRS power
down. Since this alignment mode uses predetermined
heading, the alignment process will be shortened.
SAHRS stored heading alignment should normally provide
a S&IRS ALIGN COMPLETE message in less
than 1 minute. The navigation quality value at this time
will exceed 10 run per hour, and, if time permits, additional
alignment is recommended and will take place as
long as the parking brake is set.
20.3.3.2.3 SAHRS Standalone Magnetic Initiated
Ground Allgnment. The SAHRS magnetic initiatedg
rounda lignment mode is manually selectedfr om
the SAHRS ALIGN MFD formatb y depressingth eM AG
pushbutton shown in Figure 20-18. Verification of ownaircraft
latitude and longitude on the above MFD format
shouldb e made, and, if necessaryc, orrectv alues entered
as described in SAHRS Standalone Normal Ground
　
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